158919 has 4 divisors (see below), whose sum is σ = 211896. Its totient is φ = 105944.

The previous prime is 158909. The next prime is 158923. The reversal of 158919 is 919851.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 158919 - 2⁷ = 158791 is a prime.

It is a super-2 number, since 2×158919² = 50510497122, which contains 22 as substring.

It is a D-number.

It is a nialpdrome in base 11.

It is a self number, because there is not a number n which added to its sum of digits gives 158919.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (158909) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26484 + ... + 26489.

It is an arithmetic number, because the mean of its divisors is an integer number (52974).

2¹⁵⁸⁹¹⁹ is an apocalyptic number.

158919 is a deficient number, since it is larger than the sum of its proper divisors (52977).

158919 is an equidigital number, since it uses as much as digits as its factorization.

158919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52976.

The product of its digits is 3240, while the sum is 33.

The square root of 158919 is about 398.6464599115. The cubic root of 158919 is about 54.1658140563.

The spelling of 158919 in words is "one hundred fifty-eight thousand, nine hundred nineteen".